Erugin, Nickolay P.
Linear systems of ordinary differential equations with periodic and quasi-periodic coefficients Nickolay P. Erugin - New York: Academic Press, 1966. - 271p.
eng
Differential equations
515.352 / ERL
Linear systems of ordinary differential equations with periodic and quasi-periodic coefficients Nickolay P. Erugin - New York: Academic Press, 1966. - 271p.
eng
Differential equations
515.352 / ERL